> Hi,
>
> I'm having a problem rendering emitting objects, where transparent objects seem
> to be blocking the light from others behind.
>
> It can be seen in the minimal code (part of a larger scene) below and in this
> render https://www.dropbox.com/s/fki0av19wjwnbvu/minimal_bug_example.png?dl=0
>
> The left hand cylinder seems to obscure the right hand one, and I can't work out
> why. Can anyone help?

Seems to be a coincident surface/numeric accuracy issue, try changing 
your 0.0000001 offset to 0.001 instead, that fixed it for me. And as 
already mentioned, you probably meant 0.001*x

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